PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B563Plug,protective,dust and Moistur

Caplugs Llc Dba Mokon Div Caplugs · NSN 5340-00-443-5915 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-443-5915 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-443-5915. Primary manufacturer part number: B563.
Features
  • Plug,protective,dust and Moistur — FSC 5340
  • Thread Size and Series/type Designator: 5/16-18 UNIFIED NATIONAL COARSE (UNC)
  • Design Type: THREADED
  • Material: PLASTIC
  • Drive Type: RAISED RIB
  • Features Provided: BEVELED SEAT
  • Overall Diameter: 0.790 INCHES MINIMUM AND 0.830 INCHES MAXIMUM IN
  • Thread Class: 2A A
Applications
  • Applications requiring Plastic construction
General Description

The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-00-443-5915, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caplugs Llc Dba Mokon Div Caplugs. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5340-00-443-5915
Primary Part NumberB563
Item NamePlug,protective,dust and Moistur
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerCaplugs Llc Dba Mokon Div Caplugs
StatusACTIVE
Thread Size and Series/type Designator5/16-18 UNIFIED NATIONAL COARSE (UNC)
Design TypeTHREADED
MaterialPLASTIC
Drive TypeRAISED RIB
Features ProvidedBEVELED SEAT
Overall Diameter0.790 INCHES MINIMUM AND 0.830 INCHES MAXIMUM IN
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4730-00-391-8341B563 INTERCHANGEABLE
Strainer Element,sediment
Itt Fluid Technology Corp Itt Mcdonnell and Miller
3120-01-284-4693B56-3 INTERCHANGEABLE
Bearing,sleeve
Altra Industrial Motion Corp.
5925-01-485-9233B563 INTERCHANGEABLE
Circuit Breaker
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
Cross-Reference Index
Part NumberManufacturer
B563 Caplugs Llc Dba Mokon Div Caplugs (USA)
B563 Protective Closures Co Inc (USA)
927B329 Avionics Specialties, Inc. (USA)
Related Parts
4730-00-391-8341INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
B563
3120-01-284-4693INTERCHANGEABLE
BEARING,SLEEVE
B56-3
5925-01-485-9233INTERCHANGEABLE
CIRCUIT BREAKER
B563

Frequently Asked Questions

What is NSN 5340-00-443-5915?

NSN 5340-00-443-5915 is a Plug,protective,dust and Moistur, manufactured by Caplugs Llc Dba Mokon Div Caplugs, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-443-5915?

NSN 5340-00-443-5915 has 3 cross-referenced part numbers: B563 (Caplugs Llc Dba Mokon Div Caplugs), B563 (Protective Closures Co Inc), 927B329 (Avionics Specialties, Inc.).

What NSN replaces 5340-00-443-5915?

There are 3 known substitutes for 5340-00-443-5915: 4730-00-391-8341, 3120-01-284-4693, 5925-01-485-9233. Verify interchangeability with system specifications before substitution.

What are the specifications of B563?

Key specifications for B563: Thread Size and Series/type Designator: 5/16-18 UNIFIED NATIONAL COARSE (UNC); Design Type: THREADED; Material: PLASTIC; Drive Type: RAISED RIB. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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